Showing structure for 1-[25-(3,3-dimethyloxiran-2-yl)-1,3,13,15-tetraazaheptacyclo[18.4.1.0²,⁶.0⁶,²².0⁷,¹².0¹⁴,²².0¹⁶,²¹]pentacosa-7,9,11,16,18,20-hexaen-3-yl]ethanone